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Long-term operation upgrades advanced during outage of Czech Dukovany Unit 3

On September 8, 2026, CEZ Group (CEZ) is utilizing the current outage maintenance window of Unit 3 at the Dukovany Nuclear Power Plant to carry out large-scale modernization of the turbine hall and secondary circuit. These systems are responsible for converting the thermal energy generated by the reactor into electricity and delivering it to the transmission grid. CEZ stated that during this outage, technicians will perform hundreds of inspections, repairs, maintenance activities, and modifications on secondary circuit equipment. In addition to routine inspections required by regulations and operating procedures, preventive maintenance, defect resolution, and equipment upgrades will also be carried out on site, creating conditions for the plant's goal of operating for up to 80 years. Roman Havlín, Director of the Dukovany Nuclear Power Plant, stated that while outage maintenance at nuclear power plants typically draws more attention to the reactor and primary circuit, the turbine hall equipment that ensures actual electricity generation is equally critical, and related equipment will also receive intensive maintenance during the outage.

2026-09-09

Units 3 and 4 of Dukovany Nuclear Power Plant to Undergo Joint Maintenance of Shared Systems

Dukovany Nuclear Power Plant staff will initiate a planned extended outage for Unit 4 on the evening of August 1, while Unit 3 will remain in its outage state. Both units will be offline simultaneously in August, and the plant will use this window to conduct comprehensive inspections, maintenance, and modernization of the shared facilities of Units 3 and 4. Bohdan Zronek, member of the Board of Directors of ČEZ Group and head of the nuclear energy division, stated that the simultaneous shutdown of Units 3 and 4 at Dukovany will place the plant under an intensive work schedule over the coming weeks. Experts from ČEZ and its suppliers will handle hundreds of tasks, and the effectiveness of the outage work depends on precise coordination across all stages. According to...

2026-08-01